Cleanroom Air Showers and Tunnels

Air Showers

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Air Showers and Tunnels FAQs

What is an air shower?

Air showers are antechambers that help decontaminate personnel prior to their entering a critical environment. Decontamination is completed through a cycle where air is blown through nozzles that are evenly distributed throughout the enclosure walls. This air is recirculated through filters (typically HEPA filters) and clears dust and dirt particles off the bodies of personnel.

Can custom air showers be manufactured?

Terra Universal offers both standard and custom air showers. Please contact us for more information.

Do you have UL-listed air showers?

Yes, Terra Universal offers UL-listed air showers. Please contact us for more information.

Is it possible to alter the settings on the air shower?

Terra’s air showers allow the operator flexibility to program numerous settings using an easy-to-use touch-screen control panel. You can easily set cycle operation times, entrance/exit delays, when the lights turn off/on, and more.

How do you ship your air showers?

Terra Universal normally ships air showers as pre-assembled systems. However, you can request to have your order shipped disassembled for easier transport through standard doorways or more space-restrictive access areas. Just notify your Terra sales associate to include this “Knock-Down” option when ordering.

What is the air flow velocity inside the air shower?

When the shower cycle commences, pressurized air streams from adjustable nozzles at a velocity of up to 8,000 feet per minute (41 meters per second). This ensures the necessary efficient scrubbing action to remove particulate matter.

Can I control the lights independently from the air shower cycle?

Terra’s air showers come standard with occupancy sensors that, when triggered by personnel presence, turn on the lights in the enclosure. A delay time is programmable to automatically turn off these “Smart Lights.”

How can I rate the efficacy of my air shower?

You can rate the efficacy of the air shower by measuring the air flow velocity at each nozzle. Each nozzle is designed to provide up to 8,000 feet per minute of air flow. If the measured velocities fall significantly short of 8,000 feet per minute, check whether the HEPA filters need to be replaced.

Can your air showers work in the opposite mode?

Terra’s air showers come standard with the capability to reverse the function of the entrance and exit doors at the touch of a button.

How often do the HEPA filters need to be replaced?

The frequency at which the HEPA filters need to be replaced depends on each application. Test when the filters need to be replaced if air flow at the air nozzles reduces significantly. Terra Universal provides a “Run Times” feature where personnel can keep track of how much air shower operation time and cycles have elapsed to help in setting up a filter replacement maintenance protocol.

How do you clean an air shower?

Please refer to Terra’s Cleaning Procedures Manual.

Air Showers & Tunnels Photo Gallery

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High-Velocity Cleanroom Air Curtains
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1 Material2 Width1 Depth1 Height2 Voltage

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Material: 304 Stainless Steel
Width: 48", 69"
Depth: 17"
Height: 19"
Voltage: 120 V, 240 V
Smart® Air Shower Pass-Throughs
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Material: Powder-Coated Steel, 304 Stainless Steel
Voltage: 120 V, 240 V
Inside Width: 35"
Inside Depth: 32"
Inside Height: 48"

Clear All Filters

Features and Benefits

Air Shower Cart Pass Through, Powder-Coated Steel

Air Shower Pass Throughs have an electronically activated, high-velocity HEPA blower system that removes surface-deposited particles from large materials, preventing cross-contamination of the cleanroom (model shown: powder-coated steel).

Low Profile Air Shower

Pre-assembled, self-contained Low-Profile Air Showers position the blower/filter cabinet mounted on the side of the enclosure to reduce overall height, allowing transport through restricted entries.

LED Lighting

Low-profile LED lighting offers excellent visibility and power savings. Lights can either be manually controlled or set to automatic on/off via the touchscreen control panel.

Emergency Exit Button

The emergency bypass button immediately shut down the air shower and release the doors when depressed; the doors also release when a power outage occurs to ensure operator safety.

Adjustable Nozzles on Cleanroom Air Shower

Adjustable Air Shower Nozzles

Adjustable air nozzles on the walls and ceilings provide multi-directional flow of high-velocity, HEPA-filtered air to dislodge and remove particles from surfaces of personnel and parts before they enter the cleanroom.

Photohelic Gauge

The Photohelic gauge measures the backpressure generated on the dirty-side of the HEPA filter, providing an indication of filter saturation. With proper setup, the control panel will display an alert when the HEPA filter needs to be replaced.

Air Shower for Palletized Equipment

Terra’s Air Shower for Palletized Equipment washes large equipment with high-velocity, HEPA-filtered air from five sides, removing and retaining surface particles before equipment is transferred to a lab or cleanroom.

Touchscreen Control Panel

Terra Air Showers and Tunnels feature a PLC touchscreen for simple programming or air shower duration, delay and other functions by gloved personnel.

Cleanroom Oversized High Speed Vinyl Door Airlock

High-Speed Doors Speed Up Transfer!

High-speed doors speed up parts transfer into a cleanroom; air shower nozzles provide high-speed wash of HEPA-filtered air to remove surface particles, and air locks provide personnel transfer without HEPA air shower

Custom Configurations in Powder-Coated or Stainless Steel

Air Showers can be modified to suit your floorplan and application. Shown: stainless steel 90°-turn Air Shower installed installed on Terra BioSafe Cleanroom with touch-screen control panel.

Motion Sensors

Occupancy sensor activates air shower when doors are closed

Illustration of high-velocity air curtain stream installed in cleanroom entryway

Air Curtain Airflow Diagram

Cleanroom air curtains provide a blade-shaped shower of ULPA-filtered air, acting as a barrier to protect against particles and ambient air from entering a controlled environment.

Air Showers & Tunnels

Stainless Steel Air Showers: Standard and Custom Designs
Cleanroom Air Shower
Terra Universal IQ-OQ Process

Available in stainless or powder-coated steel, air showers direct a high-velocity flow of HEPA-filtered air from walls to dislodge particles Stainless Steel Air Showers: Standard and Custom Designs Available in stainless or powder-coated steel, air showers direct a high-velocity flow of HEPA-filtered air from walls to dislodge particles; custom configurations like this T-shaped floor plan accommodate unique requirements.

Demonstration on cleanroom air shower prior to entering gowning room Cleanroom Air Shower Cleanroom air shower provides additional cleanly precaution before entering the gowning room

This video describes the IQ/OQ process for Equipment and Cleanrooms Terra Universal IQ-OQ Process This video describes the IQ/OQ process for Equipment and Cleanrooms

Technical Resources

Terra Universal

Laboratory-Equipment

Terra Universal

Laboratory-Equipment

Air Showers

Features and Benefits